123261524993 has 8 divisors (see below), whose sum is σ = 125788641000. Its totient is φ = 120757074048.

The previous prime is 123261524959. The next prime is 123261525001. The reversal of 123261524993 is 399425162321.

It can be written as a sum of positive squares in 4 ways, for example, as 19314606529 + 103946918464 = 138977^2 + 322408^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123261524993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123261524933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5655278 + ... + 5677031.

It is an arithmetic number, because the mean of its divisors is an integer number (15723580125).

Almost surely, 2^123261524993 is an apocalyptic number.

It is an amenable number.

123261524993 is a deficient number, since it is larger than the sum of its proper divisors (2527116007).

123261524993 is a wasteful number, since it uses less digits than its factorization.

123261524993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11332531.

The product of its digits is 699840, while the sum is 47.

The spelling of 123261524993 in words is "one hundred twenty-three billion, two hundred sixty-one million, five hundred twenty-four thousand, nine hundred ninety-three".